#!/bin/env bash
for i in {1..5}; do
  echo $i
done
if [ 1 -ge 0 -a 1 = 1 ]; then
    echo  1
fi

case $x in
xx)

  ;;
yy)

  ;;
pattern)

  ;;
*)
  ;;  
esac

function foo() {
    return 1
}